A112545 - cp's OEIS frontend

A112545 Least odd number k greater than 1 such that the sum of the predecessor and successor primes of the n-th prime is divisible by k or if no such odd k exists then 2.

n	a(n)
2	7
3	5
4	2
5	5
6	7
7	2
8	5
9	3
10	3
11	3
12	3
13	5
14	11
15	3
16	53
17	3
18	3
19	3
20	5
21	3
22	3
23	3
24	3
25	5
26	5
27	13
28	53
29	5
30	59
31	61
32	3
33	3
34	11
35	5
36	3
37	157
38	3
39	3
40	173
41	3
42	5
43	11
44	97
45	7
46	3
47	211
48	3
49	113
50	5
51	3
52	3
53	5
54	3
55	257
56	263
57	3
58	3
59	3
60	5
61	7
62	5
63	151
64	5
65	157
66	7
67	3
68	3
69	7
70	5
71	3
72	3
73	3
74	373
75	3
76	3
77	3
78	5
79	13
80	5
81	5
82	5
83	7
84	3
85	3
86	3
87	3
88	5
89	5
90	29
91	3
92	3

[7, 5, 2, 5, 7, 2, 5, 3, 3, 3, 3, 5, 11, 3, 53, 3, 3, 3, 5, 3, 3, 3, 3, 5, 5, 13, 53, 5, 59, 61, 3, 3, 11, 5, 3, 157, 3, 3, 173, 3, 5, 11, 97, 7, 3, 211, 3, 113, 5, 3, 3, 5, 3, 257, 263, 3, 3, 3, 5, 7, 5, 151, 5, 157, 7, 3, 3, 7, 5, 3, 3, 3, 373, 3, 3, 3, 5, 13, 5, 5, 5, 7, 3, 3, 3, 3, 5, 5, 29, 3, 3]

cp's OEIS Frontend

A112545 Least odd number k greater than 1 such that the sum of the predecessor and successor primes of the n-th prime is divisible by k or if no such odd k exists then 2.

Table of values

List of values

n	a(n)
2	7
3	5
4	2
5	5
6	7
7	2
8	5
9	3
10	3
11	3
12	3
13	5
14	11
15	3
16	53
17	3
18	3
19	3
20	5
21	3
22	3
23	3
24	3
25	5
26	5
27	13
28	53
29	5
30	59
31	61
32	3
33	3
34	11
35	5
36	3
37	157
38	3
39	3
40	173
41	3
42	5
43	11
44	97
45	7
46	3
47	211
48	3
49	113
50	5
51	3
52	3
53	5
54	3
55	257
56	263
57	3
58	3
59	3
60	5
61	7
62	5
63	151
64	5
65	157
66	7
67	3
68	3
69	7
70	5
71	3
72	3
73	3
74	373
75	3
76	3
77	3
78	5
79	13
80	5
81	5
82	5
83	7
84	3
85	3
86	3
87	3
88	5
89	5
90	29
91	3
92	3

n	a(n)
2	7
3	5
4	2
5	5
6	7
7	2
8	5
9	3
10	3
11	3
12	3
13	5
14	11
15	3
16	53
17	3
18	3
19	3
20	5
21	3
22	3
23	3
24	3
25	5
26	5
27	13
28	53
29	5
30	59
31	61
32	3
33	3
34	11
35	5
36	3
37	157
38	3
39	3
40	173
41	3
42	5
43	11
44	97
45	7
46	3
47	211
48	3
49	113
50	5
51	3
52	3
53	5
54	3
55	257
56	263
57	3
58	3
59	3
60	5
61	7
62	5
63	151
64	5
65	157
66	7
67	3
68	3
69	7
70	5
71	3
72	3
73	3
74	373
75	3
76	3
77	3
78	5
79	13
80	5
81	5
82	5
83	7
84	3
85	3
86	3
87	3
88	5
89	5
90	29
91	3
92	3

n	a(n)
2	7
3	5
4	2
5	5
6	7
7	2
8	5
9	3
10	3
11	3
12	3
13	5
14	11
15	3
16	53
17	3
18	3
19	3
20	5
21	3
22	3
23	3
24	3
25	5
26	5
27	13
28	53
29	5
30	59
31	61
32	3
33	3
34	11
35	5
36	3
37	157
38	3
39	3
40	173
41	3
42	5
43	11
44	97
45	7
46	3
47	211
48	3
49	113
50	5
51	3
52	3
53	5
54	3
55	257
56	263
57	3
58	3
59	3
60	5
61	7
62	5
63	151
64	5
65	157
66	7
67	3
68	3
69	7
70	5
71	3
72	3
73	3
74	373
75	3
76	3
77	3
78	5
79	13
80	5
81	5
82	5
83	7
84	3
85	3
86	3
87	3
88	5
89	5
90	29
91	3
92	3